What happens if a federal court (say, the Eastern District of Oklahoma) issues an injunction barring HHS from making “advance payments of tax credits” in the 33 states with federal Exchanges?

Has HHS done any planning for that contingency? If so, what are those contingency plans?

If HHS has not, why not? Given that the Congressional Research Service and Harvard Law Review both say there’s a credible case that the PPACA forbids tax credits in the 33 states with federal Exchanges, how could HHS not have a contingency plan ready?